Windshield-cleaner motor



WINDSHIELD CLEANER MOTOR Filed June 6, 1927 'l Patented Nov. 1l, 1936v UNITED sTATES JOHN L. .NILSON AND .TOEN F. PRINCE, F GHICAGO, ILLINOIS WINDSHIELD-CLEANER MOTOR Application :tiled June 6, 1927. Serial No. 196,701.

Our invention relates to automatically operated, or power-driven cleaners, as distinguished from the hand operated devices. The objects of the present improvement are to provide an operating mechanism in small, compact and yet powerful form; one that will not obstruct a material portion of the iield ofvision or detract from the general appearance of a vehicle; a device that avoids the use of istons and the like with their friction, lea ages and packingsgI and one that is easily attached and removed. Another object is` to rovide a comparatively silently operating. evice, and a construction and ar- .15 rangement of parts which cannot be disarranged -f om without, and which obviates 1 lubrication. y

With the above-named and other objects in view as will appear, our invention consists in zo the novel construction, combination and, ar.

rangement of parts hereinafter described in detail, illustrated in the accompan ing drawappended claims.

ing and more particularly pointe out in the ing 16 is composed of two cup-shaped memb ers 17 and 18 facing each other and pro- 70 In the drawingportion of a wind shield and its framewith our improvement attached thereto.' Fi re 2 is an enlarged section taken substantially on the line 2-2 of Fi ure 5.

Figure 3"is a top plan view o Figure 1 Figure 4 is an enlarged section taken substantially on the line 4 4, of-Figure 5.

Flgure 5 is a section taken substantially on the line 5 5, of Figure 8.

Figure 6 is a sectlon taken substantially-on the line 6-6, of Figure8. Figure 7 is a side view of the spiral gear portion of the shaft broken away. Figure 8.is a section taken substantially on the line 8-8 of Fi re 5.

Figure 9 is a si e view of yone of the snap 'Figure 1 is a sideview of a broken away' In .any suitable place in the said frame 3 50 v may convenientlybe made a bore adapte'd to receive a squeegee or cleaner, driving shaft 4. The latter carries on its outer end (F igs. 1 and 2) yan arm 5 on whichv is a bracket 6 to which is attached in any suitablemanner a cleaner 8. The arm 5 is longitudinally adjustable to vary its reach. It is also laterally adjustable -to adapt it to the varying thicknessesl of windshields, Vby the rovision of a suitable number of transverse ores 9, 10 and 50.

11 in either one of which the arm is held against movement relative to the shaft 4 by means of a set screw 12 in a. threaded bore 13 that intersects the bores 9, 10 and 11.

- The shaft 4 is rotatably mounted iny bear- 35 l ing bores 14 and 15, the former being through one` side of the casing, which as a whole, is deslgnated by the-numeral 16. The said casvided, respectively,'with anges 19 and 20 by means of which the two sections of the casmg are' secured together, and between which is 4 clamped acombination gasket and diaphragm 21. The latter is moved or vibrated by air .75

suctions introduced alternately within the casing chambers 24 `and 25 on the respective opposite sides of the. diaphragm. The movements of the latter are transformed by a helical screw connection 26 into an oscillating so rotary movement in the squeegee-carrying' shaft 4, the screw being engaged with threads -27 within a sleeve 28 that is longitudinally movable in a bore 29' that is concentric with the bore 15 and in the opposite side of the 86A Casing 16. On theinner end of the sleeve 28 are exterior threads 30 which pass through a corresponding bore in the diaphragm and areengaged on its opposite sides by t readedV discs 31 and'32, which by being turned on 90 their threads toward each other clam the diaphragm to the sleeve and cause the atter Vto move with saidl diaphragm and thereby turn the screw, orcam groove member 26. The movement of the diaphragm also controls the' movements of a single member valve 31 and 32 near their peripheries (Fig. 5),

. member 49,under while the other end of said post (Figs. 5 and 8) has therein a slot 37 that is en ged by an intermediate portion of an arcimember 38 having two parallel runs 39 and 40 inthe ends of which are notches 41 and 42 (Fig. 9) which-engage an annular or circumerential slot 43 in each of a pair of brackets 44 and 45 arranged at opposite sides of the casing chamber. Each 1s provided with a bent out lug. port'on forming a foot 46 which is secured by a crew 47, or otherwise to a boss 48 rising from the bottom of the member 16 of the casing.

Opposite the member 38 there is placed inl co-operative relation a substantially similar -member 49 and also provided with bearing notches such as 41'and42 that are engaged with the slots 43 in the brackets, 44andv 45. The intermediate portion of the member 49 isengaged with a slot 50 (Figs. 5, 8 and 10) in the periphe of the valve cylinder 33. To the interme 'ate, opposing and, arallel runs of the members 38 and 49 are hoo ed the ends (Figs. 6 and 8) ofcoiled springs 51 and These sprmgs are'tensionedto exert ak 52. stress on saidI parallel runs so that when the member 38 is moved through its diaphragm connection past the line of dead center passing through the pivotal point 43 it will contmue to swing, tother' with its companion 0 e spring tension and with a quick sna movement after the, diaphragm has reache the end of its movement, within the limitations of the width of. an opening 33 made in the side ofthe boss or enlargement 34 for the reception of the valve engaging t1portion of, the member 49. The movement of e valve under its own spring power will, of course, be started by the diaphragm immediately'before it has reached the extreme end of its own' movement under suction power, sufficiently to bring the valveshifting o r snap over movement, ast the above mentioned dead center. I the o ening of one valve "and the simultaneous c osing of the other valve were to take place under suction power under the brake of the squeegee and wlthout suiciently violent or forcible :momentum toshaped overcome said brake, a slow moving motor,

as in windshield movement, would stop at the moment-both .ports were-.open and suction l was divided equally between both sides of the diaphragm.

The shaft 4, carrying the helically grooved portion 26 has its inner bearing 15 in the bore of a nut 53 which is engaged with internal threads in a hollow boss 54 (Figures 5 and 8). The nut 53 has therein a slot 55 (Figure 8) to be engaged by-ta screw driver. The valve 33, which is shown alone on an enlarged scale in Figure 10, is provided with two suction ports 56 and 57 that are in tu-rn placed in communication with a conduit that includes a casing outlet port at 58 through which suction is communicated from any suitable suction chamber, such as the inlet manifold of an explosion engine (not shown), by way of a lex1ble,`or other tube or passage 59. The latter may be replaced by any other suitable and less conspicuous channel `such as, for instance, in whole or part, the channel space 60 indicated in Fi re 3 between the edge of the glass and t e bottom of the U-shaped frame 3, providing the glass of the windshield is so well packed in its frame as to answer the purpose of a vacuum. tube.

The port 58 enters the side of the casing as in Figures 1, 3, and 5, and communicates with a valve controlled lateral opening and valve seat 61 in the bottom of the bore in which the valve piston moves. Said Port and valve seat 61 registers with the bore- 62 that extends throughout'the length of the valve 33, and it is always open to the ports 56 and 57 arranged at right angles to each other, as shown. Air is drawn from the chamber 24 by placin the port 56 in register with the ort 64. ir is drawn from theother chamr 25 when its port 57 is', as in the several views, in register with a' port 65 that leads to a port 66 at right angles thereto, and which port 66 passes through the dividing wall, or diaphragm, between the chambers 24 and 25 as shown in Figures 2 and 4. The foregoing vrefers to the suctions from the chamloci los i ers. As suction isl taking place in one of 4ports,.as follows.

.A5, for instance, 1n Figure 5 the chamber 24 is shown open to the outer air, its condi-v tion at the end' of the movement of the diaphragm 'to the left and commencement ofV -suction "in the chamber 25 to return said diaphragm to the right. The -latter is therefore open to the central suction bore 62, or tothe air suctionpassages 66, 65, 57,- 62, 61, 584

and 59. When the ports 56 and 64 are in register the chamber 25 is open to the outer air through an annular .groove 67 on the periphery of the cylinder 33 being placed in register with the port on one side of the ,cylinder and a bore 68 alined with it on the opposite side of the cylinder, the'bore 68, as shownV in Figures 2 and 4, leading to the outer air. On the other hand, when the ports 57 and65 are in register 68 will be closed to 65 and a circumferential groove 69, similar to 67, will be alined, as plainly shown in Figure 5, with the port 64 and a-port 68'l similar to 68.

A space indicated 21 at the right hand end of the valve meinbei` 33, defines, like the space 33', the range of movement of the valve member. .From the space 21 leads an opening 70 for a valve stem 71 having thereon a needle valve point 72 adapted to be seated at 61. The valve stem 71 is carried by a screw 73 having a knurled head 74 and threaded engagement with a bore 75 in the casing section 18, or its boss 34. By turning this screw the valve 72 may be opened or closed to start or stop the operation of the cleaner.

As shown in detail in Figure 7 the shaft 4 has shrunk thereon or otherwise secured thereto'a collar 76 against which on thehaft are placed iiber w shers 77 and 78, the former bearing against ledge or Ishoulder 79 and the latteragainst the nut 53, so that-when the latter is tightened against the arts 77- to 79 an air-tig t joint will be made etween the shaft and the chamber`24 and outer air.

Provision is made to filter the air entering the casing at 58, la ainst dust vand other foreign substances, w ich might clog up the air passages, the latter being rathery fine or needle passages. For this purpose a screen 80 is provided and the screen has a cover 80', both being shaped to formI a chamber for cotton or other packing 81 and is secured b screws 82 over the ports 68 and 68 tliro'ili.`

which air is drawn from the outside. cover 80 is provided with an openin 82 for the admission of air. 83 and 84 in `igure 1 indicate screws by means of which the casing section. 17 is secured to the shield frame, but any other suitable fastening meansv may be employed. Y

The sleeve 28 is shown extending out of the casing section 18 through the opening .29 and on the extended portion is a. knurle`d l finger-grip part 84h means of which the sleeve may be moved4 y hand to operate the cleaner manually, if desired, or made tem porarily necessary, but for the purpose of the mechanical or suction operation the extension of the sleeve 28 and its bore 29 may be omitted and the length of the sleeve confined within 'the chambers 25 and 24.

What is claimed as new is 1. In a windshield' cleaner operating "mechanism, means for swinging the cleanerarm saidmeans embod 'ng a casing, a screw shaft therein, a nut w ch co-operates with` said` shaft' to rotate it, a valve, and a snap embodying a diaphragm which is actuated by suction for actuating said valve mechanism. l y

3. A windshield cleaner operating mechanism embodying a diaphragm casing, a diaphragm dividing vthe interior4 of'said casing into separate chambers, pneumatic actuating means for reciprocating said diaphragm, a valve, and a snap over valve actuating mechanism located in one of said chambers and connected with said diaphragm. f

4. The combination with a pair of suction chambers, with a vibratory diaphragm, suction means for oscillating the latter, a shaft, telescopin threaded members which connect said ,a laphragm and shaft and convert vthe oscillatory movements of saiddiaphragm into rotary oscillating movements in said shaft, a valve mechamsm, and a sna over movement for same connected with said daphragm.

5. A windshield L'cleaneroperating mechanism embodying a casing having a pair of suction chambers'therein, a diaphragm between said chambers, suction means for moving said diaphragm to and fro, a valve mechanism for controlling the same, a rotary shaft alined with'v the path of movement of said dia hragm, and a snap over movement' includedP in said valve mechanism-'and housed within one of said chambers. x

nism embodying a casing,"an actuator iii'ember .movable therein, a valve chamber, ports leading from the valve chamber to opposite sides of the actuated member, a suction port leadin from said valve chamber, a tubular valve or connectin either off-the first recited Aports withv sai suction ort, said valve being responsive in its operation to the actuation of said actuator member and a needle valve accessible from the outside of the said casing and extending through said valve for controlling'the said suction port.

7. A windshield cleaner operating mechanism embodying a casing, an actuator member movable therein a valve chamber, ports leading from the va ve chamber-to opposite sides of .the actuated-member, a suction port leadin from said valve chamber, a tubular valve or connectin either of the first recited portswith sai` suction port, said valve being responsive inits operation to the actuation of said actuator member, and a needle valve accessible from the voutside of the said 6. A windshield cleaner operating mecliaf iso . casing, and extending through said valve for controlling the said suction port, .both of said valves bein operable independently with respect to eac other.

In testimony whereof I, J onN F. PRINCE, have signed my name to this specification, on this 6th day of May,.A. D. 1927.

4 JOHN F. PRINCE.

In testimony whereof I, JOHN L. NrLsoN lo have signed my name to this specification,

on this 6th day of Ma A. D. 1927.

JYOHN L. NILSON. 

